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Simmons, J.A.; Andrew, T.; Arnold, A.; Bee, N.; Bennett, J.; Grundman, M.; Johnson, K.; Shepherd, R. |
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Title |
Small-Scale Chemical Changes Caused by In-stream Limestone Sand Additions to Streams |
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Journal Article |
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Year |
2006 |
Publication |
Mine Water Env. |
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25 |
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4 |
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241-245 |
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acid mine drainage aluminum calcium limestone sand sediment stream liming West Virginia |
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Abstract |
In-stream limestone sand addition (ILSA) has been employed as the final treatment for acid mine drainage discharges at Swamp Run in central West Virginia for six years. To determine the small-scale longitudinal variation in stream water and sediment chemistry and stream biota, we sampled one to three locations upstream of the ILSA site and six locations downstream. Addition of limestone sand significantly increased calcium and aluminum concentrations in sediment and increased the pH, calcium, and total suspended solids of the stream water. Increases in alkalinity were not significant. The number of benthic macroinvertebrate taxa was significantly reduced but there was no effect on periphyton biomass. Dissolved aluminum concentration in stream water was reduced, apparently by precipitation into the stream sediment. |
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1025-9112 |
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Small-Scale Chemical Changes Caused by In-stream Limestone Sand Additions to Streams; 1; FG 4 Abb., 2 Tab.; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17420 |
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248 |
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Author |
Guo, F.; Yu, H. |
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Title |
Hydrogeochemistry and treatment of acid mine drainage in southern China |
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Book Chapter |
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1993 |
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Proceedings of the Annual National Meeting – American Society for Surface Mining and Reclamation, vol.10 |
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277-283 |
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acid mine drainage Asia bacteria chemical reactions China coal mines ecology Far East geochemistry hydrochemistry Jiangxi China lime mines oxidation pH pollution sulfides surface water trace elements water quality 22 Environmental geology 02B Hydrochemistry |
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Coal mines and various sulfide ore deposits are widely distributed in Southern China. Acid mine drainage associated with coal and metal sulfide deposits affects water quality in some mined areas of Southern China. Mining operations accelerate this natural deterioration of water quality by exposing greater surface areas of reactive minerals to the weathering effects of the atmosphere, hydrosphere, and biosphere. Some approaches to reduce the effects of acid mine drainage on water quality are adopted, and they can be divided into two aspects: (a) Man-made control technology based on long-term monitoring of acid mine drainage; and, (b) Neutralization of acidity through the addition of lime. It is important that metals in the waste water are removed in the process of neutralization. A new method for calculating neutralization dosage is applied. It is demonstrated that the calculated value is approximately equal to the actual required value. |
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Zamora, B.A.; Connolly, R.E. |
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The challenge of integrating diverse perspectives in reclamation |
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Hydrogeochemistry and treatment of acid mine drainage in southern China; GeoRef; English; 2002-028935; 10th annual national meeting of the American Society for Surface Mining and Reclamation, Spokane, WA, United States, May 16, 1993 References: 3; illus. incl. 4 tables |
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CBU @ c.wolke @ 16744 |
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366 |
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Sato, D.; Tazaki, K. |
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Calcification treatment of mine drainage and depositional formula of heavy metals |
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Journal Article |
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2000 |
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Chikyu Kagaku = Earth Science |
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54 |
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5 |
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328-336 |
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acid mine drainage Asia calcification deposition ettringite Far East heavy metals Ishikawa Japan Japan lime Ogoya Mine pollution sulfates waste water water treatment 22, Environmental geology |
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Depositional formula of heavy metals after disposal of the mine drainage from the Ogoya Mine in Ishikawa Prefecture, Japan, was mineralogically investigated. Strong acidic wastewater (pH 3.5) from pithead of the mine contains high concentration of heavy metals. In this mine, neutralizing coagulation treatment is going on by slaked lime (calcium hydroxides: Ca(OH) (sub 2) ). Core samples were collected at disposal pond to which the treated wastewater flows. The core samples were divided into 44 layers based on the color variation. The mineralogical and chemical compositions of each layer were analyzed by an X-ray powder diffractometer (XRD), an energy dispersive X-ray fluorescence analyzer (ED-XRF) and a NCS elemental analyzer. The upper parts are rich in brown colored layers, whereas discolored are the deeper parts. The color variation is relevant to Fe concentration. Brown colored core sections are composed of abundant hydrous ferric oxides with heavy metals, such as Cu, Zn, and Cd. On the other hand, S concentration gradually increases with depth. XRD data indicated that calcite decreases with increasing depth, and ettringite is produced at the deeper parts. Cd concentration shows similar vertical profile to those of calcite and ettringite. The results revealed that hydrous ferric oxides, calcite and ettringite are formed on deposition, whereby incorporating the heavy metals. |
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0366-6611 |
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Calcification treatment of mine drainage and depositional formula of heavy metals; 2001-032610; References: 19; illus. incl. 1 table, sketch map Japan (JPN); GeoRef; Japanese |
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CBU @ c.wolke @ 16543 |
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252 |
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Simmons, J.; Ziemkiewicz, P.; Black, D.C. |
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Title |
Use of Steel Slag Leach Beds for the Treatment of Acid Mine Drainage |
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Journal Article |
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2002 |
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Mine Water Env. |
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21 |
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2 |
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91-99 |
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acid mine drainage Beaver Creek check dam leach beds leaching metal sequestration mine water leaching procedure open limestone channel steel slag West Virginia |
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Steel slag from the Waylite steel-making plant in Bethlehem, Pennsylvania was leached with acidic mine drainage (AMD) of a known quality using an established laboratory procedure. Leaching continued for 60 cycles and leachates were collected after each cycle. Results indicated that the slag was very effective at neutralizing acidity. The AMD/slag leachates contained higher average concentrations of Ba, V, Mn, Cr, As, Ag, and Se and lower average concentrations of Sb, Fe, Zn, Be, Cd, Tl, Ni, Al, Cu, and Pb than the untreated AMD. Based on these tests, slag leach beds were constructed at the abandoned McCarty mine site in Preston County, West Virginia. The leach beds were constructed as slag check dams below limestone-lined settling basins. Acid water was captured in limestone channels and directed into basins to leach through the slag dams and discharge into a tributary of Beaver Creek. Since installation in October 2000, the system has been consistently producing net alkaline, pH 9 water. The treated water is still net alkaline and has a neutral pH after it encounters several other acidic seeps downstream. |
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1025-9112 |
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Use of Steel Slag Leach Beds for the Treatment of Acid Mine Drainage; 1; FG 20 Abb., 4 Tab.; AMD ISI | Wolkersdorfer |
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Call Number |
CBU @ c.wolke @ 17421 |
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249 |
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Author |
Aube, B.C.; Zinck, J.M. |
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Comparison of AMD treatment processes and their impact on sludge characteristics |
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1999 |
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acid mine drainage cost decontamination density discharge geochemistry hydrochemistry leaching lime metals mine dewatering neutralization pH pollution remediation sludge stability tailings toxicity viscosity waste disposal water treatment 22, Environmental geology |
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Lime neutralisation for the treatment of acid mine drainage is one of the oldest water pollution control techniques practised by the mineral industry. Several advances have been made in the process in the last thirty years, particularly with respect to discharge concentrations and sludge density. However, the impact of different treatment processes on metal leachability and sludge handling properties has not been investigated. A study of treatment sludges sampled from various water treatment plants has shown that substantial differences can be related to the treatment process and raw water composition. This study suggests that sludge densities, excess alkalinity, long-term compaction properties, metal leachability, crystallinity and cost efficiency can be affected by the neutralisation process and specific process parameters. The study also showed that the sludge density and dewatering ability is not positively correlated with particle size as previously suggested in numerous studies. The treatment process comparisons include sludge samples from basic lime treatment, the conventional High Density Sludge (HDS) Process, and the Geco HDS Process. |
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Sudbury |
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Mining and the Environment II |
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2002-060865; Sudbury '99; Mining and the environment II--Sudbury '99; L'exploitation miniere et l'environnement, Sudbury, ON, Canada, Sept. 13-17, 1999 References: 10; illus. incl. 6 tables; GeoRef; English |
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Call Number |
CBU @ c.wolke @ 16574 |
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473 |
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